XML 92 R76.htm IDEA: XBRL DOCUMENT
v3.23.1

Taxation (Details) - Schedule of movement of valuation allowance - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Schedule of Movement of Valuation Allowance [Abstract] |  |  |
Balance at beginning of the year | $ 15,235 | $ 9,830 | $ 7,095
Change of valuation allowance | 1,569 | 5,405 | 2,735
Balance at end of the year | $ 16,804 | $ 15,235 | $ 9,830

X
- References No definition available. + Details
Name: | ucl_BalanceAtBeginningOfThePeriod
Namespace Prefix: | ucl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- References No definition available. + Details
Name: | ucl_ChangeOfValuationAllowanceAmount
Namespace Prefix: | ucl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_ValuationAllowanceLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration